Revised Thermocouple Reference Tables Type N

MAXIMUM TEMPERATURE RANGE
Thermocouple Grade
– 450 to 2372°F
– 270 to 1300°C
Extension Grade
32 to 392°F
0 to 200°C
LIMITS OF ERROR
(whichever is greater)
Standard: 2.2°C or 0.75% Above 0°C
2.2°C or 2.0% Below 0°C
Special: 1.1°C or 0.4%
COMMENTS, BARE WIRE ENVIRONMENT:
Alternative to Type K; More Stable
at High Temperatures
TEMPERATURE IN DEGREES °C
REFERENCE JUNCTION AT 0°C
Thermocouple
Grade
Nickel-14.2%
Chromium-1.4% Silicon
vs.
Nickel-4.4% Silicon-
0.1% Magnesium
Extension
Grade
+
–
Thermoelectric Voltage in Millivolts
Revised Thermocouple
Reference Tables
TYPE
N
Reference
Tables
N.I.S.T.
Monograph 175
Revised to
ITS-90
°C -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 °C °C 0 1 2 3 4 5 6 7 8 9 10 °C
300 9.341 9.377 9.412 9.448 9.483 9.519 9.554 9.590 9.625 9.661 9.696 300
310 9.696 9.732 9.768 9.803 9.839 9.875 9.910 9.946 9.982 10.018 10.054 310
320 10.054 10.089 10.125 10.161 10.197 10.233 10.269 10.305 10.341 10.377 10.413 320
-260 - 4.345 - 4.345 - 4.344 - 4.344 - 4.343 - 4.342 - 4.341 - 4.340 - 4.339 - 4.337 -4.336 -260 330 10.413 10.449 10.485 10.521 10.557 10.593 10.629 10.665 10.701 10.737 10.774 330
-250 -4.338 -4.334 -4.332 -4.330 -4.328 -4.326 -4.324 -4.321 -4.319 -4.318 -4.313 -250 340 10.774 10.810 10.846 10.882 10.918 10.955 10.991 11.027 11.064 11.100 11.136 340
+
–
Z
-240 -4.313 -4.310 -4.307 -4.304 -4.300 -4.297 -4.293 -4.289 -4.285 -4.281 -4.277 -240
-230 -4.277 -4.273 -4.268 -4.263 -4.258 -4.254 -4.248 -4.243 -4.238 -4.232 -4.226 -230
-220 -4.226 -4.221 -4.215 -4.209 -4.202 -4.196 -4.189 -4.183 -4.176 - 4.169 -4.162 -220
-210 -4.162 -4.154 -4.147 -4.140 -4.132 -4.124 -4.116 -4.108 -4.100 -4.091 -4.083 -210
-200 -4.083 -4.074 -4.066 -4.057 -4.048 -4.038 -4.029 -4.020 -4.010 -4.000 -3.990 -200
-190 -3.990 -3.980 -3.970 -3.960 -3.950 -3.939 -3.928 -3.918 -3.907 -3.898 -3.884 -190
-180 -3.884 -3.873 -3.862 -3.850 -3.838 -3.827 -3.815 -3.803 -3.790 -3.778 -3.786 -180
-170 -3.766 -3.753 -3.740 -3.728 -3.715 -3.702 -3.688 -3.675 -3.662 -3.648 -3.634 -170
-160 -3.634 -3.621 -3.607 -3.593 -3.578 -3.564 -3.550 -3.535 -3.521 -3.506 -3.491 -160
-150 -3.491 -3.476 -3.461 -3.446 -3.431 -3.415 -3.400 -3.384 -3.368 -3.352 -3.336 -150
-140 -3.336 -3.320 -3.304 -3.288 -3.271 -3.255 -3.238 -3.221 -3.205 -3.188 -3.171 -140
-130 -3.171 -3.153 -3.136 -3.119 -3.101 -3.084 -3.066 -3.048 -3.030 -3.012 -2.994 -130
-120 -2.994 -2.976 -2.958 -2.939 -2.921 -2.902 -2.883 -2.865 -2.846 -2.827 -2.808 -120
-110 -2.808 -2.789 -2.769 -2.750 -2.730 -2.711 -2.691 -2.672 -2.652 -2.632 -2.612 -110
-100 -2.612 -2.592 -2.571 -2.551 -2.531 -2.510 -2.490 -2.469 -2.448 -2.428 -2.407 -100
-90 -2.407 -2.386 -2.385 -2.344 -2.322 -2.301 -2.280 -2.258 -2.237 -2.215 -2.193 -90
-80 -2.193 -2.172 -2.150 -2.128 -2.106 -2.084 -2.082 -2. 039 -2.017 -1.995 -1.972 -80
-70 -1.972 -1.950 -1.927 -1.905 -1.882 -1.859 -1.836 -1.813 -1.790 -1.767 -1.744 -70
-60 -1.744 -1.721 -1.698 -1.674 -1.651 -1.627 -1.604 -1.580 -1.557 -1.533 -1.509 -60
-50 -1.509 -1.485 -1.462 -1.438 -1.414 -1.390 -1.366 -1.341 -1.317 -1.293 -1.269 -50
-40 -1.269 -1.244 -1.220 -1.195 -1.171 -1.146 -1.122 -1.097 -1.072 -1.048 -1.023 -40
-30 -1.023 -0.998 -0.973 -0.948 -0.923 -0.898 -0.873 -0.848 -0.823 -0.798 -0.772 -30
-20 -0.772 -0.747 -0.722 -0.696 -0.671 -0.646 -0.620 -0.595 -0.589 -0.544 -0.518 -20
-10 -0.518 -0.492 -0.467 -0.441 -0.415 -0.390 -0.364 -0.338 -0.312 -0.286 -0.260 -10
0 -0.260 -0.234 -0.209 -0.183 -0.157 -0.131 -0.104 -0.078 -0.052 -0.026 0.000 0
0 0.000 0.026 0.052 0.078 0.104 0.130 0.156 0.182 0.208 0.235 0.261 0
10 0.261 0.287 0.313 0.340 0.366 0.393 0.419 0.446 0.472 0.499 0.525 10
20 0.525 0.552 0.578 O.605 0.632 O.659 0.685 0.712 0.739 0.766 0.793 20
30 0.793 0.820 0.847 0.874 0.901 0.928 0.955 0.983 1.010 1.037 1.065 30
40 1.065 1.092 1.119 1.147 1.174 1.202 1.229 1.257 1.284 1.312 1.340 40
50 1.340 1.368 1.395 1.423 1.451 1.479 1.507 1.535 1.563 1.501 1.619 50
60 1.619 1.647 1.675 1.703 1.732 1.760 1.788 1.817 1.845 1.873 1.902 60
70 1.902 1.930 1.959 1.988 2.016 2.045 2.074 2.102 2.131 2.160 2.189 70
80 2.189 2.218 2.247 2.276 2.305 2.334 2.363 2.392 2.421 2.450 2.480 80
90 2.480 2.509 2.538 2.568 2.597 2.826 2.656 2.685 2.715 2.744 2.774 90
100 2.774 2.804 2.833 2.863 2.893 2.923 2.953 2.983 3.012 3.042 3.072 100
110 3.072 3.102 3.133 3.163 3.193 3.223 3.253 3.283 3.314 3.344 3.374 110
120 3.374 3.405 3.435 3.466 3.496 3.527 3.557 3.588 3.619 3.649 3.680 120
130 3.680 3.711 3.742 3.772 3.803 3.834 3.865 3.896 3.927 3.958 3.989 130
140 3.989 4.020 4.051 4.083 4.114 4.145 4.176 4.208 4.239 4.270 4.302 140
150 4.302 4.333 4.365 4.396 4.428 4.459 4.491 4.523 4.554 4.586 4.618 I5O
160 4.618 4.650 4.681 4.713 4.745 4.777 4.809 4.841 4.873 4.905 4.937 160
170 4.937 4.969 5.001 5.033 5.066 5.098 5.130 5.162 5.195 5.227 5.259 170
180 5.259 5.292 5.324 5.357 5.389 5.422 5.454 5.487 5.520 5.552 5.585 ISO
190 5.585 5.618 5.650 5.683 5.716 5.749 5.782 5.815 5.847 5.880 5.913 190
200 5.913 5.946 5.979 6.013 6.046 6.079 6.112 6.145 6.178 6.211 6.245 200
210 6.245 6.278 6.311 6.345 6.378 6.411 6.445 6.478 6.512 6.545 6.579 210
220 6.579 68.612 e.e" 6.680 8.713 15.747 6.781 6.814 6.848 6.882 6.918 220
230 6.916 6.949 6.983 7.017 7.051 7.085 7.119 7.153 7.187 7.221 7.255 230
240 7.255 7.289 7.323 7.357 7.392 7.426 7.460 7.494 7.528 7.583 7.597 240
250 7.597 7.631 7.666 7.700 7.734 7.769 7.803 7.838 7.872 7.907 7.941 250
260 7.941 7.976 8.010 8.045 8.080 8.114 8.149 8.184 8.218 8.253 8.288 260
270 8.288 8.323 8.358 8.392 8.427 8.462 8.497 8.532 8.567 8.602 8.637 270
280 8.637 8.672 8.707 8.742 8.777 8.812 8.847 8.882 8.918 8.953 8.988 280
290 8.988 9.023 9.058 9.094 9.129 9.164 9.200 9.235 9.270 9.306 9.341 290
350 11.136 11.173 11.209 11.245 11.282 11.318 11.355 11.391 11.428 11.464 11.501 350
360 11.501 11.537 11.574 1.610 11.647 11.683 11.720 11.757 11.793 11.830 11.867 360
370 11.867 11.903 11.940 11.977 12.013 12.050 12.087 12.124 12.160 12.197 12.234 370
380 12.234 12.271 12.308 12.345 12.382 12.418 12.455 12.492 12.529 12.566 12.603 380
390 12.603 12.640 12.677 12.714 12.751 12.788 12.825 12.862 12.899 12.937 12.974 390
400 12.974 13.011 13.048 13.085 13.122 13.159 13.197 13.234 13.271 13.308 13.346 400
410 13.346 13.383 13.420 13.457 13.495 13.532 13.569 13.607 13.644 13.682 13.719 410
420 13.719 13.756 13.794 13.831 13.869 13.906 13.944 13.981 14.019 14.056 14.094 420
430 14.094 14.131 14.169 14.206 14.244 14.281 14.319 14.356 14.394 14.432 14.469 430
440 14.469 14.507 14.545 14.582 14.620 14.658 14.695 14.733 14.771 14.809 14.846 440
450 14.848 14.884 14.922 14.960 14.998 15.035 15.073 15.111 15.149 15.187 15.225 450
460 15.225 15.262 15.300 15.338 15.376 15.414 15.452 15.490 15.528 15.566 15.604 460
470 15.604 15.642 15.680 15.718 15.756 15.794 15.832 15.870 15.908 15.946 15.984 470
480 15.984 16.022 16.060 I 6.099 16.137 16.175 16.213 16.251 16.289 16.327 16.366 480
490 16.366 16.404 16.442 16.480 16.518 16.557 16.595 16.633 16.671 16.710 16.748 490
500 16.748 16.786 I 6.824 16.883 16.901 16.939 16.978 17.016 17.054 17.093 17.131 Soo
510 17.131 17.169 17.208 17.246 17.285 17.323 17.361 17.400 17.438 17.477 17.515 510
520 17.515 17.554 17.592 17.630 17.669 17.707 17.746 17.784 17.823 17.861 17.900 520
530 17.900 17.938 17.977 18.016 18.054 18.093 18.131 18.170 18.208 18.247 18.286 530
540 18.286 18.324 18.363 18.401 18.440 18.479 18.517 18.556 18.595 18.633 18.672 540
550 18.672 18.711 18.749 18.788 18.827 18.865 18.904 18.943 18.982 19.020 19.059 550
560 19.059 19.096 19.136 19.175 19.214 19.253 19.292 19.330 19.369 19.408 19.447 560
570 19.447 19.485 19.524 19.563 19.602 19.641 19.680 19.718 19.757 19.796 19.835 570
580 19.835 19.874 19.913 19.952 19.990 20.029 20.068 20.107 20.146 20.185 20.224 580
590 20.224 20.263 20.302 20.341 20.379 20.418 20.457 20.496 20.535 20.574 20.613 590
600 20.613 20.652 20.69l 20.730 20.769 20.808 20.847 20.886 20.925 20.964 21.003 600
610 21.003 21.042 21.081 21.120 21.159 21.198 21.237 21.276 21.315 21.354 21.393 610
620 21.393 21.432 21.471 21.510 21.549 21.588 21.628 21.667 21.706 21.745 21.784 620
630 21.784 21.823 21.862 21.901 21.940 21.979 22.018 22.058 22.097 22.136 22.175 630
640 22.175 22.214 22.253 22.292 22.331 22.370 22.410 22.449 22.488 22.527 22.566 640
650 22.556 22.605 22.644 22.684 22.723 22.762 22.801 22.840 22.879 22.919 22.958 650
660 22.958 22.997 23.036 23.075 23.115 23.154 23.193 23.232 23.271 23.311 23.350 660
670 23.350 23.389 23.428 23.467 23.507 23.546 23.585 23.624 23.663 23.703 23.742 670
680 23.742 23.781 23.820 23.860 23.899 23.938 23.977 24.016 24.056 24.095 24.134 680
690 24.134 24.173 24.213 24.252 24.291 24.330 24.370 24.409 24.448 24.487 24.527 690
700 24.527 24.566 24.605 24.644 24.684 24.723 24.762 24.801 24.841 24.880 24.919 700
710 24.919 24.959 24.998 25.037 25.076 25.116 25.155 25.194 25.233 25.273 25.312 710
720 25.312 25.351 25.391 25.430 25.469 25.508 25.548 25.587 25.626 25.666 25.705 720
730 25.705 25.744 25.783 25.823 25.862 25.901 25.941 25.980 26.019 26.058 26.098 730
740 26.098 26.137 26.176 26.216 26.255 26.294 26.333 26.373 26.412 26.451 26.491 740
750 26.491 26.530 26.569 26.608 26.648 26.687 26.726 26.766 26.805 26.844 26.883 75O
760 26.883 26.923 26.962 27.001 27.041 27.080 27.119 27.158 27.198 27.237 27.276 760
770 27.276 27.316 27.355 27.394 27.433 27.473 27.512 27.551 27.591 27.630 27.669 770
780 27.669 27.708 27.748 27.787 27.826 27.866 27.905 27.944 27.983 28.023 28.062 780
790 28.062 28.101 28.140 28.180 28.219 28.258 28.297 28.337 28.376 28.415 28.455 790
800 28.455 28.494 28.533 28.572 28.612 28.651 28.690 28.729 28.769 28.808 28.847 800
810 28.847 28.886 28.926 28.965 29.004 29.043 29.083 29.122 29.161 29.200 29.239 810
820 29.239 29.279 29.318 29.357 29.396 29.436 29.475 29.514 29.553 29.592 29.632 820
830 29.632 29.671 29.710 29.749 29.789 29.828 29.867 29.906 29.945 29.985 30.024 830
840 30.024 30.063 30.102 30.141 30.181 30.220 30.259 30.298 30.337 30.376 30.416 840
850 30.416 30.455 30.494 30.533 30.572 30.611 30.651 30.690 30.729 30.768 30.807 850
860 30.807 30.846 30.886 30.925 30.964 31.003 31.042 31.081 31.120 31.160 31.199 860
870 31.199 31.238 31.277 31.316 31.355 31.394 31.433 31.473 31.512 31.551 31.590 870
880 31.590 31.629 31.668 31.707 31.746 31.785 31.824 31.863 31.903 31.942 31.981 880
890 31.981 32.020 32.059 32.098 32.137 32.176 32.215 32.254 32.293 32.332 32.371 890
°C 0 1 2 3 4 5 6 7 8 9 10 °C °C 0 1 2 3 4 5 6 7 8 9 10 °C
Z-214

Revised Thermocouple
Reference Tables
TYPE
N
Reference
Tables
N.I.S.T.
Monograph 175
Revised to
ITS-90
Thermocouple
Grade
Nickel-14.2%
Chromium-1.4% Silicon
vs.
Nickel-4.4% Silicon-
0.1% Magnesium
Extension
Grade
+
–
+
–
MAXIMUM TEMPERATURE RANGE
Thermocouple Grade
– 450 to 2372°F
– 270 to 1300°C
Extension Grade
32 to 392°F
0 to 200°C
LIMITS OF ERROR
(whichever is greater)
Standard: 2.2°C or 0.75% Above 0°C
2.2°C or 2.0% Below 0°C
Special: 1.1°C or 0.4%
COMMENTS, BARE WIRE ENVIRONMENT:
Alternative to Type K; More Stable
at High Temperatures
TEMPERATURE IN DEGREES °C
REFERENCE JUNCTION AT 0°C
Thermoelectric Voltage in Millivolts
°C 0 1 2 3 4 5 6 7 8 9 10 °C °C 0 1 2 3 4 5 6 7 8 9 10 °C
900 32.371 32.410 32.449 32.488 32.527 32.566 32.605 32.644 32.683 32.722 32.761 900 1150 41.976 42.014 42.052 42.089 42.127 42.164 42.202 42.239 42.277 42.314 42.352 1150
910 32.761 32.800 32.839 32.878 32.917 32.956 32.995 33.034 33.073 33.112 33.151 910 1160 42.352 42.390 42.427 42.465 42.502 42.540 42.577 42.614 42.652 42.689 42.727 1160
920 33.151 33.190 33.229 33.268 33.307 33.346 33.385 33.424 33.463 33.502 33.541 920 1170 42.727 42.764 42.802 42.839 42.877 42.914 42.951 42.989 43.026 43.064 43.101 1170
930 33.541 33.580 33.619 33.658 33.697 33.736 33.774 33.813 33.852 33.891 33.930 930 1180 43.101 43.138 43.176 43.213 43.250 43.288 43.325 43.362 43.399 43.437 43.474 1190
940 33.930 33.969 34.008 34.047 34.086 34.124 34.163 34.202 34.241 34.280 34.319 940 1190 43.474 43.511 43.549 43.586 43.623 43.660 43.698 43.735 43.772 43.809 43.846 1190
950 34.319 34.358 34.396 34.435 34.474 34.513 34.552 34.591 34.629 34.668 34.707 950
960 34.707 34.746 34.785 34.823 34.862 34.901 34.940 34.979 35.017 35.056 35.095 960
970 35.095 35.134 35.172 35.211 35.250 35.289 35.327 35.366 35.405 35.444 35.482 970
980 35.482 35.521 35.560 35.598 35.637 35.676 35.714 35.753 35.792 35.831 35.889 980
990 35.869 35.908 35.946 35.985 36.024 36.062 36.101 36.140 36.178 36.217 36.256 990
1000 36.256 38.294 36.333 36.371 36.410 36.449 36.487 36.526 36.564 36.603 36.641 1000
1010 36.841 36.680 36.718 38.757 38.796 38.834 36.873 36.911 36.950 36.988 37.027 1010
1020 37.027 37.065 37.104 37.142 37.181 37.219 37.258 37.296 37.334 37.373 37.411 1020
1030 37.411 37.450 37.488 37.527 37.565 37.603 37.642 37.680 37.719 37.757 37.795 1030
1040 37.795 37.834 37.872 37.911 37.949 37.987 38.026 38.064 38.102 38.141 38.179 1040
1200 43.846 43.884 43.921 43.958 43.995 44.032 44.069 44.106 44.144 44.181 44.218 1900
1210 44.218 44.255 44.292 44.329 44.366 44.403 44.440 44.477 44.514 44.551 44.551 1210
1220 44.588 44.625 44.662 44.699 44.736 44.773 44.810 44.847 44.884 44.921 44.958 1220
1230 44.958 44.995 45.032 45.069 45.105 45.142 45.179 45.216 45.253 45.290 45.326 1230
1240 45.326 45.363 45.400 45.437 45.474 45.510 45.547 45.584 45.621 45.657 45.694 1240
1250 45.694 45.731 45.767 45.804 45.841 45.877 45.914 45.951 45.987 46.024 46.080 1250
1260 46.060 46.097 46.133 46.170 46.207 46.243 46.280 46.316 46.353 46.389 46.425 1260
1270 46.425 46.462 46.498 46.535 46.571 46.608 46.844 46.880 46.717 46.753 46.789 1270
1280 46.789 46.826 46.862 46.898 46.935 46.971 47.007 47.043 47.079 47.116 47.152 1280
1290 47.152 47.188 47.224 47.260 47.296 47.333 47.369 47.405 47.441 47.477 47.513 1290
1050 38.179 38.217 38.256 38.294 38.332 38.370 38.409 38.447 38.485 38.524 38.562 1050
1060 38.562 38.600 38.638 38.677 38.715 38.753 38.791 38.829 38.868 38.906 38.944 1060
1070 38.944 38.982 39.020 39.059 39.097 39.135 39.173 39.211 39.249 39.287 39.326 1070
1080 39.326 39.364 39.402 39.440 39.478 39.516 30.554 39.592 39.630 39.668 39.706 1000
1090 39.708 39.744 39.783 39.821 39.859 39.897 39.935 39.973 40.011 40.049 40.087 1090
1100 40.087 40.125 40.163 40.201 40.238 40.276 40.314 40.352 40.390 40.428 40.466 1100
1110 40.466 40.504 40.542 40.580 40.818 40.655 40.693 40.731 40.769 40.807 40.845 1110
1120 40.845 40.883 40.920 40.958 40.996 41.034 41.072 41.109 41.147 41.185 41.223 1120
1130 41.223 41.260 41.298 41.336 41.374 41.411 41.449 41.487 41.525 41.562 41.6OO 1130
1140 41.600 41.638 41.675 41.713 41.751 41.788 41.826 41.864 41.901 41.939 41.976 1140
°C 0 1 2 3 4 5 6 7 8 9 10 °C °C 0 1 2 3 4 5 6 7 8 9 10 °C
Z-215